Camera optical lens including six lenses of +−+−+− refractive powers

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 1.50≤f1/f≤3.00; and 8.50≤R9/d9≤12.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and moreparticularly, to a camera optical lens suitable for handheld terminaldevices, such as smart phones or digital cameras, and imaging devices,such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lenses with good imaging quality therefore have become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. Also, with the development oftechnology and the increase of the diverse demands of users, and as thepixel area of photosensitive devices is becoming smaller and smaller andthe requirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuresgradually appear in lens designs. There is an urgent need forultra-thin, wide-angle camera lenses with good optical characteristicsand fully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens inaccordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment1 of the present disclosure. The camera optical lens 10 includes 6lenses. Specifically, the camera optical lens 10 includes, from anobject side to an image side, an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and a sixthlens L6. An optical element such as an optical filter GF can be arrangedbetween the sixth lens L6 and an image plane Si.

The first lens L1 is made of a plastic material, the second lens L2 ismade of a plastic material, the third lens L3 is made of a plasticmaterial, the fourth lens L4 is made of a plastic material, the fifthlens L5 is made of a plastic material, and the sixth lens L6 is made ofa plastic material.

The second lens has a negative refractive power, and the third lens L3has a positive refractive power.

Here, a focal length of the camera optical lens 10 is defined as f, anda focal length of the first lens L1 is defined as f1. The camera opticallens 10 should satisfy a condition of 1.50≤f1/f≤3.00, which specifies aratio of the focal length f1 of the first lens L1 and the focal length fof the camera optical lens 10. If the lower limit of the specified valueis exceeded, although it would facilitate development of ultra-thinlenses, the positive refractive power of the first lens L1 will be toostrong, and thus it is difficult to correct the problem like anaberration and it is also unfavorable for development of wide-anglelenses. On the contrary, if the upper limit of the specified value isexceeded, the positive refractive power of the first lens L1 wouldbecome too weak, and it is then difficult to develop ultra-thin lenses.Preferably, 1.51≤f1/f≤2.96.

A curvature radius of an object side surface of the fifth lens L5 isdefined as R9, and an on-axis thickness of the fifth lens L5 is definedas d9. The camera optical lens 10 further satisfies a condition of8.50≤R9/d9≤12.00. By controlling the refractive power of the fifth lensL5 within the reasonable range, correction of the aberration of theoptical system can be facilitated. Preferably, 8.57≤R9/d9≤11.90.

A total optical length from an object side surface of the first lens L1to an image plane of the camera optical lens 10 along an optic axis isdefined as TTL. When the focal length of the camera optical lens, thefocal length of the first lens, the curvature radius of the object sidesurface of the fifth lens and the on-axis thickness of the fifth lenssatisfy the above conditions, the camera optical lens will have theadvantage of high performance and satisfy the design requirement of alow TTL.

In this embodiment, the object side surface of the first lens L1 isconvex in a paraxial region, an image side surface of the first lens L1is concave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object side surface of the first lens L1 isdefined as R1, and a curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies a condition of −9.56≤(R1+R2)/(R1−R2)≤−1.77. This canreasonably control a shape of the first lens L1 in such a manner thatthe first lens L1 can effectively correct a spherical aberration of thecamera optical lens. Preferably, −5.98≤(R1+R2)/(R1−R2)≤−2.21.

An on-axis thickness of the first lens L1 is defined as d1. The cameraoptical lens 10 further satisfies a condition of 0.04≤d1/TTL≤0.14. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.06≤d1/TTL≤0.11.

In this embodiment, an object side surface of the second lens L2 isconvex in the paraxial region, and an image side surface of the secondlens L2 is concave in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal lengthof the second lens L2 is f2. The camera optical lens 10 furthersatisfies a condition of −578.96≤f2/f≤−9.10. By controlling the negativerefractive power of the second lens L2 within the reasonable range,correction of the aberration of the optical system can be facilitated.Preferably, −361.85≤f2/f≤−11.37.

A curvature radius of the object side surface of the second lens L2 isdefined as R3, and a curvature radius of the image side surface of thesecond lens L2 is defined as R4. The camera optical lens 10 furthersatisfies a condition of 8.67≤(R3+R4)/(R3−R4)≤47.71, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof on-axis chromatic aberrations. Preferably,13.88≤(R3+R4)/(R3−R4)≤38.17.

An on-axis thickness of the second lens L2 is defined as d3. The cameraoptical lens 10 further satisfies a condition of 0.03≤d3/TTL≤0.11. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.04≤d3/TTL≤0.09.

In this embodiment, an object side surface of the third lens L3 isconvex in the paraxial region, and an image side surface of the thirdlens L3 is convex in the paraxial region.

The focal length of the camera optical lens 10 is f, and a focal lengthof the third lens L3 is f3. The camera optical lens 10 further satisfiesa condition of 1.09≤f3/f≤13.51. The appropriate distribution of therefractive power leads to a better imaging quality and a lowersensitivity. Preferably, 1.74≤f3/f≤10.81.

A curvature radius of the object side surface of the third lens L3 isdefined as R5, and a curvature radius of the image side surface of thethird lens L3 is defined as R6. The camera optical lens 10 furthersatisfies a condition of −0.99≤(R5+R6)/(R5−R6)≤−0.20. This caneffectively control a shape of the third lens L3, thereby facilitatingshaping of the third lens L3 and avoiding bad shaping and generation ofstress due to the overly large surface curvature of the third lens L3.Preferably, −0.62≤(R5+R6)/(R5−R6)≤−0.25.

An on-axis thickness of the third lens L3 is defined as d5. The cameraoptical lens 10 further satisfies a condition of 0.05≤d5/TTL≤0.16. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.08≤d5/TTL≤0.13.

In this embodiment, an object side surface of the fourth lens L4 isconvex in the paraxial region, an image side surface of the fourth lensL4 is concave in the paraxial region, and the fourth lens L4 has anegative refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fourth lens L4 is f4. The camera optical lens 10 furthersatisfies a condition of −5.20≤f4/f≤−1.50. The appropriate distributionof the refractive power leads to a better imaging quality and a lowersensitivity. Preferably, −3.25≤f4/f≤−1.88.

A curvature radius of the object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The camera optical lens 10 furthersatisfies a condition of 1.31≤(R7+R8)/(R7−R8)≤4.63, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting the problemlike an off-axis aberration. Preferably, 2.10≤(R7+R8)/(R7−R8)≤3.70.

An on-axis thickness of the fourth lens L4 is defined as d7. The cameraoptical lens 10 further satisfies a condition of 0.03≤d7/TTL≤0.08. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.04≤d7/TTL≤0.07.

In this embodiment, an object side surface of the fifth lens L5 isconvex in the paraxial region, an image side surface of the fifth lensL5 is convex in the paraxial region, and the fifth lens L5 has apositive refractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the fifth lens L5 is f5. The camera optical lens 10 further satisfiesa condition of 0.26≤f5/f≤0.80. This can effectively make a light angleof the camera lens gentle and reduce the tolerance sensitivity.Preferably, 0.41≤f5/f≤0.64.

A curvature radius of the object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of the image side surface of thefifth lens L5 is defined as R10. The camera optical lens 10 furthersatisfies a condition of 0.40≤(R9+R10)/(R9−R10)≤1.29, which specifies ashape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting the problemof an off-axis aberration. Preferably, 0.64≤(R9+R10)/(R9−R10)≤1.03.

An on-axis thickness of the fifth lens L5 is defined as d9. The cameraoptical lens 10 further satisfies a condition of 0.11≤d9/TTL≤0.34. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.17≤d9/TTL≤0.27.

In this embodiment, an image side surface of the sixth lens L6 isconcave in the paraxial region, and the sixth lens L6 has a negativerefractive power.

The focal length of the camera optical lens 10 is f, and a focal lengthof the sixth lens L6 is f6. The camera optical lens 10 further satisfiesa condition of −1.09≤f6/f≤−0.36. The appropriate distribution of therefractive power leads to a better imaging quality and a lowersensitivity. Preferably, −0.68≤f6/f≤−0.45.

A curvature radius of an object side surface of the sixth lens L6 isdefined as R11, and a curvature radius of the image side surface of thesixth lens L6 is defined as R12. The camera optical lens 10 furthersatisfies a condition of 0.43≤(R11+R12)/(R11−R12)≤1.84, which specifiesa shape of the sixth lens L6. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemlike an off-axis aberration. Preferably, 0.69≤(R11+R12)/(R11−R12)≤1.48.

A thickness on-axis of the sixth lens L6 is defined as d11. The cameraoptical lens 10 further satisfies a condition of 0.05≤d11/TTL≤0.15. Thisfacilitates achieving ultra-thin lenses. Preferably, 0.08≤d11/TTL≤0.12.

In this embodiment, the focal length of the camera optical lens 10 isdefined as f, and a combined focal length of the first lens L1 and thesecond lens L2 is f12. The camera optical lens 10 further satisfies acondition of 0.79≤f12/f≤4.13. This can eliminate the aberration anddistortion of the camera optical lens while reducing a back focal lengthof the camera optical lens, thereby maintaining miniaturization of thecamera optical lens. Preferably, 1.27≤f12/f≤3.31.

In this embodiment, the total optical length TTL of the camera opticallens 10 is smaller than or equal to 5.50 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is smaller than or equal to 5.25 mm.

In this embodiment, the camera optical lens 10 has a large aperture, andan F number of the camera optical lens 10 is smaller than or equal to1.85. The camera optical lens 10 has a better imaging performance.Preferably, the F number of the camera optical lens 10 is smaller thanor equal to 1.82.

With such design, the total optical length TTL of the camera opticallens 10 can be made as short as possible, and thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object sidesurface of the first lens to the image plane of the camera optical lensalong the optic axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject side surface and/or image side surface of the lens, so as tosatisfy the demand for the high quality imaging. The description belowcan be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 ofthe present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0 = −0.316 R1 1.710 d1 = 0.473 nd1 1.5445 ν155.99 R2 3.784 d2 = 0.066 R3 2.348 d3 = 0.255 nd2 1.6614 ν2 20.41 R42.092 d4 = 0.356 R5 26.160 d5 = 0.512 nd3 1.5445 ν3 55.99 R6 −50.084 d6= 0.154 R7 5.367 d7 = 0.270 nd4 1.6355 ν4 23.97 R8 2.739 d8 = 0.101 R912.366 d9 = 1.048 nd5 1.5445 ν5 55.99 R10 −1.074 d10 = 0.295 R11 −14.817d11 = 0.493 nd6 1.5352 ν6 56.12 R12 1.117 d12 = 0.555 R13 ∞ d13 = 0.210ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.152

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the optical filterGF;

R14: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6to the object side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image side surface of the optical filterGF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 6.1728E−01 −5.1971E−03 1.8242E−03  1.3798E−02 −2.2711E−02 1.6659E−02 0.0000E+00 0.0000E+00 R2 −2.0605E+01  −1.8670E−01 3.9065E−01−4.4887E−01  3.1429E−01 −9.7879E−02 0.0000E+00 0.0000E+00 R3 1.6560E+00−3.2453E−01 3.5667E−01 −2.0265E−01 −7.8543E−02  1.7557E−01 −8.0732E−02 0.0000E+00 R4 3.4354E−02 −1.1889E−01 4.8947E−02  2.4408E−01 −5.1468E−01 4.3243E−01 −1.3885E−01  0.0000E+00 R5 7.3267E+01 −5.2285E−02−2.0239E−02  −7.2382E−02  1.1307E−01 −1.1172E−01 0.0000E+00 0.0000E+00R6 6.9332E+01 −8.0194E−02 −1.6616E−01   4.4568E−01 −9.1185E−01 1.0012E+00 −5.8285E−01  1.4227E−01 R7 7.1627E+00 −2.3253E−01−1.1301E−01   3.6472E−01 −6.0953E−01  4.5498E−01 −1.1475E−01  0.0000E+00R8 −1.4634E+01  −1.2946E−01 −7.5131E−03   6.3532E−02 −1.0188E−01 7.1787E−02 −2.0785E−02  1.9986E−03 R9 −9.0000E+01  −4.1659E−021.3571E−02 −2.5521E−02  2.2023E−02 −7.0600E−03 7.7105E−04 0.0000E+00 R10−5.0525E+00  −2.2463E−01 2.6486E−01 −2.5647E−01  1.6260E−01 −5.5498E−029.4686E−03 −6.4116E−04  R11 2.3131E+01 −1.5205E−01 6.8315E−02−2.3640E−02  7.9574E−03 −1.7197E−03 1.9139E−04 −8.4498E−06  R12−5.5126E+00  −7.9119E−02 3.7502E−02 −1.2643E−02  2.7103E−03 −3.5787E−042.6268E−05 −8.1035E−07 

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16are aspheric surface coefficients.

IH: Image Heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 10 according toEmbodiment 1 of the present disclosure. P1R1 and P1R2 represent theobject side surface and the image side surface of the first lens L1,P2R1 and P2R2 represent the object side surface and the image sidesurface of the second lens L2, P3R1 and P3R2 represent the object sidesurface and the image side surface of the third lens L3, P4R1 and P4R2represent the object side surface and the image side surface of thefourth lens L4, P5R1 and P5R2 represent the object side surface and theimage side surface of the fifth lens L5, and P6R1 and P6R2 represent theobject side surface and the image side surface of the sixth lens L6. Thedata in the column named “inflexion point position” refers to verticaldistances from inflexion points arranged on each lens surface to theoptic axis of the camera optical lens 10. The data in the column named“arrest point position” refers to vertical distances from arrest pointsarranged on each lens surface to the optic axis of the camera opticallens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.735 P2R2 0 P3R1 1 0.245 P3R2 1 1.115 P4R1 2 0.265 1.065 P4R2 2 0.4051.245 P5R1 3 0.395 1.275 1.485 P5R2 1 1.095 P6R1 2 1.415 2.335 P6R2 10.635

TABLE 4 Number of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 0 P2R2 0 P3R1 1 0.405 P3R2 0 P4R1 1 0.445 P4R2 1 0.725 P5R1 1 0.685P5R2 1 1.705 P6R1 1 2.165 P6R2 1 1.715

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 10 according toEmbodiment 1. FIG. 4 illustrates a field curvature and a distortion oflight with a wavelength of 555 nm after passing the camera optical lens10 according to Embodiment 1, in which a field curvature S is a fieldcurvature in a sagittal direction and T is a field curvature in atangential direction.

Table 13 shows various values of Embodiments 1, 2 and 3 and valuescorresponding to parameters which are specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 1.944 mm. The image height of 1.0H is 3.147 mm. The FOV (fieldof view) is 82.80°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd νd S1 ∞ d0 = −0.288 R1 1.808 d1 = 0.436 nd1 1.5445 ν155.99 R2 3.336 d2 = 0.065 R3 2.149 d3 = 0.312 nd2 1.6614 ν2 20.41 R42.018 d4 = 0.327 R5 12.555 d5 = 0.526 nd3 1.5445 ν3 55.99 R6 −23.216 d6= 0.159 R7 5.492 d7 = 0.251 nd4 1.6355 ν4 23.97 R8 2.567 d8 = 0.112 R99.635 d9 = 1.115 nd5 1.5445 ν5 55.99 R10 −1.047 d10 = 0.262 R11 −21.535d11 = 0.499 nd6 1.5352 ν6 56.12 R12 1.054 d12 = 0.555 R13 ∞ d13 = 0.210ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.163

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 A10A12 A14 A16 R1  7.1389E−01 −6.3376E−03 4.0467E−03  2.0703E−02−3.3161E−02  2.4735E−02 0.0000E+00 0.0000E+00 R2 −2.2864E+01 −1.9393E−014.0853E−01 −4.6926E−01  3.3582E−01 −1.0736E−01 0.0000E+00 0.0000E+00 R3 1.0690E+00 −3.3179E−01 3.3860E−01 −1.8773E−01 −9.2459E−02  1.9845E−01−1.0088E−01  0.0000E+00 R4 −6.3308E−02 −1.0314E−01 5.9634E−03 2.4112E−01 −4.3646E−01  3.4217E−01 −1.1057E−01  0.0000E+00 R5 8.7286E+01 −3.7634E−02 −3.3297E−02  −3.6396E−02  7.0523E−02 −7.9404E−020.0000E+00 0.0000E+00 R6 −9.0000E+01 −4.8554E−02 −2.0894E−01  5.2883E−01 −1.0215E+00  1.0824E+00 −6.1054E−01  1.4392E−01 R7 9.3710E+00 −2.2760E−01 −1.0426E−01   3.4076E−01 −5.6653E−01  4.1732E−01−1.0328E−01  0.0000E+00 R8 −1.4330E+01 −1.3169E−01 2.0936E−02 2.3806E−02 −6.5225E−02  5.1693E−02 −1.5392E−02  1.4839E−03 R9−9.0000E+01 −4.1074E−02 3.2400E−02 −3.8538E−02  2.4016E−02 −6.7491E−037.0237E−04 0.0000E+00 R10 −4.8776E+00 −2.1135E−01 2.4458E−01 −2.2923E−01 1.4106E−01 −4.6875E−02 7.7973E−03 −5.1520E−04  R11  3.6849E+01−1.5056E−01 6.7924E−02 −2.3336E−02  7.4674E−03 −1.5345E−03 1.6374E−04−6.9635E−06  R12 −5.2616E+00 −7.6854E−02 3.5787E−02 −1.1632E−02 2.3934E−03 −3.0435E−04 2.1660E−05 −6.5168E−07 

Table 7 and Table 8 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 20 according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 0 P1R2 0 P2R1 1 0.545 P2R2 1 0.925 P3R1 10.385 P3R2 1 1.125 P4R1 2 0.265 1.065 P4R2 2 0.415 1.245 P5R1 1 0.465P5R2 1 1.105 P6R1 2 1.425 2.375 P6R2 1 0.635

TABLE 8 Number of Arrest point arrest points position 1 P1R1 0 P1R2 0P2R1 0 P2R2 0 P3R1 1 0.605 P3R2 0 P4R1 1 0.445 P4R2 1 0.755 P5R1 1 0.835P5R2 1 1.735 P6R1 1 2.155 P6R2 1 1.785

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 20 according to Embodiment2. FIG. 8 illustrates a field curvature and a distortion of light with awavelength of 555 nm after passing the camera optical lens 20 accordingto Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 1.920 mm. The image height of 1.0H is 3.147 mm. The FOV (fieldof view) is 83.60°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd νd S1 ∞ d0 = −0.229 R1 2.050 d1 = 0.353 nd1 1.5445 ν155.99 R2 3.134 d2 = 0.085 R3 2.068 d3 = 0.363 nd2 1.6614 ν2 20.41 R41.912 d4 = 0.231 R5 5.258 d5 = 0.508 nd3 1.5445 ν3 55.99 R6 −15.646 d6 =0.221 R7 5.879 d7 = 0.250 nd4 1.6355 ν4 23.97 R8 2.630 d8 = 0.142 R913.173 d9 = 1.145 nd5 1.5445 ν5 55.99 R10 −0.977 d10 = 0.182 R11 8.215d11 = 0.480 nd6 1.5352 ν6 56.12 R12 0.846 d12 = 0.555 R13 ∞ d13 = 0.210ndg 1.5168 νg 64.17 R14 ∞ d14 = 0.274

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1  8.0355E−01 −1.1896E−02 2.2760E−02  1.6055E−02−3.8478E−02  3.6189E−02 0.0000E+00 0.0000E+00 R2 −1.6637E+01 −1.9459E−014.0809E−01 −4.6095E−01  3.3905E−01 −1.0792E−01 0.0000E+00 0.0000E+00 R3 7.8072E−01 −3.3300E−01 3.1726E−01 −1.9766E−01 −7.6030E−02  2.2821E−01−1.3931E−01  0.0000E+00 R4 −8.1584E−01 −1.1809E−01 −4.7495E−03  2.4035E−01 −4.3359E−01  3.3952E−01 −1.1778E−01  0.0000E+00 R5 1.8472E+01 −2.9254E−02 −3.6039E−02  −4.7478E−02  8.0904E−02 −7.9782E−020.0000E+00 0.0000E+00 R6 −9.0000E+01 −2.1789E−02 −2.0765E−01  5.2594E−01 −1.0219E+00  1.0818E+00 −6.1122E−01  1.4402E−01 R7 1.7296E+01 −2.1262E−01 −9.3293E−02   3.4482E−01 −5.6858E−01  4.1470E−01−1.0414E−01  0.0000E+00 R8 −1.7118E+01 −1.1263E−01 2.4965E−02 2.5210E−02 −6.5219E−02  5.1301E−02 −1.5584E−02  1.5222E−03 R9−9.0000E+01 −3.2120E−02 4.3150E−02 −4.1090E−02  2.2919E−02 −6.7890E−037.9115E−04 0.0000E+00 R10 −4.9673E+00 −1.9915E−01 2.4351E−01 −2.2970E−01 1.4099E−01 −4.6875E−02 7.8005E−03 −5.1409E−04  R11 −5.9739E+01−1.6022E−01 6.8161E−02 −2.3279E−02  7.4708E−03 −1.5352E−03 1.6368E−04−6.9621E−06  R12 −4.4422E+00 −8.0604E−02 3.6688E−02 −1.1652E−02 2.3833E−03 −3.0312E−04 2.1597E−05 −6.5111E−07 

Table 11 and table 12 show design data of inflexion points and arrestpoints of respective lens in the camera optical lens 30 according toEmbodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 10.495 P2R2 1 0.775 P3R1 1 0.575 P3R2 1 1.135 P4R1 3 0.265 1.065 1.195P4R2 3 0.435 1.215 1.405 P5R1 1 0.715 P5R2 1 1.085 P6R1 3 0.255 1.4552.345 P6R2 1 0.625

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 0 P1R2 0 P2R1 1 0.905 P2R2 0 P3R1 1 0.825 P3R2 0 P4R1 10.445 P4R2 1 0.815 P5R1 1 1.265 P5R2 1 1.725 P6R1 2 0.445 2.155 P6R2 11.895

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470 nm, 510 nm, 555 nm, 610 nm and650 nm after passing the camera optical lens 30 according to Embodiment3. FIG. 12 illustrates field curvature and distortion of light with awavelength of 555 nm after passing the camera optical lens 30 accordingto Embodiment 3.

As shown in Table 13, Embodiment 3 satisfies the above conditions.

Table 13 in the following lists values corresponding to the respectiveconditions in this embodiment in order to satisfy the above conditions.

In this embodiment, the entrance pupil diameter of the camera opticallens is 1.851 mm. The image height of 1.0H is 3.147 mm. The FOV (fieldof view) is 85.60°. Thus, the camera optical lens has a wide-angle andis ultra-thin. Its on-axis and off-axis chromatic aberrations are fullycorrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.500 3.455 3.332 f1 5.285 6.565 9.728 f2 −47.749 −1000.148 −548.668f3 31.532 14.994 7.267 f4 −9.102 −7.786 −7.662 f5 1.860 1.794 1.714 f6−1.914 −1.857 −1.797 f12 5.561 6.217 9.182 FNO 1.80 1.80 1.80 f1/f 1.511.90 2.92 R9/d9 11.80 8.64 11.50

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the spirit and scope of the present disclosure.

What is claimed is:
 1. A camera optical lens, comprising, from an objectside to an image side: a first lens; a second lens having a negativerefractive power; a third lens having a positive refractive power; afourth lens; a fifth lens; and a sixth lens, wherein the second lenscomprises an object side surface being convex in a paraxial region andan image side surface being concave in the paraxial region, and thecamera optical lens satisfies following conditions: 1.50≤f1/f≤3.00;8.50≤R9/d9≤12.00, −578.96≤f2/f≤−9.10; −8.67≤(R3+R4)/(R3−R4)≤47.71; and0.03≤d3/TTL≤0.11, where f denotes a focal length of the camera opticallens; f1 denotes a focal length of the first lens; R9 denotes acurvature radius of an object side surface of the fifth lens; d9 denotesan on-axis thickness of the fifth lens; f2 denotes the focal length ofthe second lens; R3 denotes a curvature radius of the object sidesurface of the second lens; R4 denotes a curvature radius of the imageside surface of the second lens; d3 denotes an on-axis thickness of thesecond lens; and TTL denotes a total optical length from an object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 2. The camera optical lens as described in claim 1,further satisfying following conditions: 1.51≤f1/f≤2.96; and8.57≤R9/d9≤11.90.
 3. The camera optical lens as described in claim 1,wherein the first lens has a positive refractive power, and comprises anobject side surface being convex in a paraxial region and an image sidesurface being concave in the paraxial region, and the camera opticallens further satisfies following conditions:−9.56≤(R1+R2)/(R1−R2)≤−1.77; and 0.04≤d1/TTL≤0.14, where R1 denotes acurvature radius of the object side surface of the first lens; R2denotes a curvature radius of the image side surface of the first lens;and TTL denotes a total optical length from the object side surface ofthe first lens to an image plane of the camera optical lens along anoptic axis.
 4. The camera optical lens as described in claim 3, furthersatisfying following conditions: −5.98≤(R1+R2)/(R1−R2)≤−2.21; and0.06≤d1/TTL≤0.11.
 5. The camera optical lens as described in claim 1,further satisfying following conditions: −361.85≤f2/f≤−11.37;13.88≤(R3+R4)/(R3−R4)≤38.17; and 0.04≤D3/TTL≤0.09.
 6. The camera opticallens as described in claim 1, wherein the third lens comprises an objectside surface being convex in a paraxial region and an image side surfacebeing convex in the paraxial region, and the camera optical lens furthersatisfies following conditions: 1.09≤f3/f≤13.51;−0.99≤(R5+R6)/(R5−R6)≤−0.20; and 0.05≤d5/TTL≤0.16, where f3 denotes afocal length of the third lens; R5 denotes a curvature radius of theobject side surface of the third lens; R6 denotes a curvature radius ofthe image side surface of the third lens; d5 denotes an on-axisthickness of the third lens; and TTL denotes a total optical length froman object side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 7. The camera optical lens asdescribed in claim 6, further satisfying following conditions:1.74≤f3/f≤10.81; −0.62≤(R5+R6)/(R5−R6)≤−0.25; and 0.08≤d5/TTL≤0.13. 8.The camera optical lens as described in claim 1, wherein the fourth lenshas a negative refractive power, and comprises an object side surfacebeing convex in a paraxial region and an image side surface beingconcave in the paraxial region, and the camera optical lens furthersatisfies following conditions: −5.20≤f4/f≤−1.50;1.31≤(R7+R8)/(R7−R8)≤4.63; and 0.03≤d7/TTL≤0.08, where f4 denotes afocal length of the fourth lens; R7 denotes a curvature radius of theobject side surface of the fourth lens; R8 denotes a curvature radius ofthe image side surface of the fourth lens; d7 denotes an on-axisthickness of the fourth lens; and TTL denotes a total optical lengthfrom an object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 9. The camera optical lens asdescribed in claim 8, further satisfying following conditions:−3.25≤f4/f≤−1.88; 2.10≤(R7+R8)/(R7−R8)≤3.70; and 0.04≤d7/TTL≤0.07. 10.The camera optical lens as described in claim 1, wherein the fifth lenshas a positive refractive power, the object side surface of the fifthlens is convex in a paraxial region, and an image side surface of thefifth lens is convex in the paraxial region, and the camera optical lensfurther satisfies following conditions: 0.26≤f5/f≤0.80;0.40≤(R9+R10)/(R9−R10)≤1.29; and 0.11≤d9/TTL≤0.34, where f5 denotes afocal length of the fifth lens; R10 denotes a curvature radius of theimage side surface of the fifth lens; TTL denotes a total optical lengthfrom an object side surface of the first lens to an image plane of thecamera optical lens along an optic axis.
 11. The camera optical lens asdescribed in claim 10, further satisfying following conditions:0.41≤f5/f≤0.64; 0.64≤(R9+R10)/(R9−R10)≤1.03; and 0.17≤d9/TTL≤0.27. 12.The camera optical lens as described in claim 1, wherein the sixth lenshas a negative refractive power, and comprises an image side surfacebeing concave in a paraxial region, and the camera optical lens furthersatisfies following conditions: −1.09≤f6/f≤−0.36;0.43≤(R11+R12)/(R11−R12)≤1.84; and 0.05≤d11/TTL≤0.15, where f6 denotes afocal length of the sixth lens; R11 denotes a curvature radius of anobject side surface of the sixth lens; R12 denotes a curvature radius ofthe image side surface of the sixth lens; d11 denotes an on-axisthickness of the sixth lens; and TTL denotes a total optical length froman object side surface of the first lens to an image plane of the cameraoptical lens along an optic axis.
 13. The camera optical lens asdescribed in claim 12, further satisfying following conditions:−0.68≤f6/f≤−0.45; 0.69≤(R11+R12)/(R11−R12)≤1.48; and 0.08≤d11/TTL≤0.12.14. The camera optical lens as described in claim 1, further satisfyinga following condition: 0.79≤f12/f≤4.13, where f12 denotes a combinedfocal length of the first lens and the second lens.
 15. The cameraoptical lens as described in claim 14, further satisfying a followingcondition: 1.27≤f12/f≤3.31.
 16. The camera optical lens as described inclaim 1, wherein a total optical length TTL from an object side surfaceof the first lens to an image plane of the camera optical lens along anoptic axis is smaller than or equal to 5.50 mm.
 17. The camera opticallens as described in claim 16, wherein the total optical length TTL ofthe camera optical lens is smaller than or equal to 5.25 mm.
 18. Thecamera optical lens as described in claim 1, wherein an F number of thecamera optical lens is smaller than or equal to 1.85.
 19. The cameraoptical lens as described in claim 18, wherein the F number of thecamera optical lens is smaller than or equal to 1.82.